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Finding the Fourth Proportional to 328,235.20, 492,352.80 and 302,574.40

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Solution

The fourth proportional to 328,235.20, 492,352.80 and 302,574.40 is: 453,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,235.20 : 492,352.80 = 302,574.40 : x
  2. Step 2: Convert to fraction form
    328,235.20/492,352.80 = 302,574.40/x
  3. Step 3: Cross multiply
    328,235.20x = 492,352.80 × 302,574.40
  4. Step 4: Simplify right side
    328,235.20x = 148,973,353,048.32
  5. Step 5: Solve for x
    x = 148,973,353,048.32/328,235.20
  6. Step 6: Final answer
    x = 453,861.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.